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  Brake system with hydraulic brake equipmentUSPTO Application #: 20080060885Title: Brake system with hydraulic brake equipment Abstract: A hydraulic brake system for two-wheel vehicles, especially bicycles, is provided. The system has a filling device, and a dispensing system filled with hydraulic fluid and a brake mechanism hydraulically connected to the dispensing system. The dispensing system also has an equalizing reservoir and a filling and bleeding opening. A bleeding and filling tool with a piston/cylinder arrangement is also provided that is used with the brake system. At least the filling and bleeding opening of the dispensing system is detachably coupleable with the bleeding and filling tool. The bleeding and filling tool is preferably a standard syringe. (end of abstract)
Agent: Volpe And Koenig, P.C. - Philadelphia, PA, US Inventors: Stefan Ruckh, Jurgen Beier USPTO Applicaton #: 20080060885 - Class: 188026000 (USPTO) Related Patent Categories: Brakes, Vehicle, Velocipede (e.g., Bicycle, Etc.), Hub Or Disk The Patent Description & Claims data below is from USPTO Patent Application 20080060885. Brief Patent Description - Full Patent Description - Patent Application Claims
FIELD OF THE INVENTION [0001] The invention relates to a brake system with hydraulic brake equipment for two-wheel vehicles, especially bicycles. BACKGROUND [0002] The invention relates to a brake system with hydraulic brake equipment for two-wheel vehicles, especially bicycles, with a filling device for the brake equipment, wherein the brake equipment has a dispensing system filled with hydraulic fluid and a brake mechanism connected to this dispensing system hydraulically, with the dispensing system having an equalizing reservoir and a filling and bleeding opening. For mounting or maintenance work on hydraulic brake equipment, the emptying, filling, and bleeding of the hydraulic system is also necessary. [0003] For this purpose, the hydraulic system can have a closable opening in the region of the brake mechanism located on the wheel, especially on the brake caliper, and also a filling and bleeding opening of the equalizing reservoir on the dispensing system. The brake fluid is filled through the opening on the brake caliper (brake caliper valve) under pressure until brake fluid without bubbles escapes from the top in the equalizing reservoir when the equalizing reservoir cover has been removed or from the filling and bleeding opening. [0004] Because the greatest caution is necessary when handling brake fluid due to its aggressivity, it must be ensured that during the filling and bleeding, no brake fluid leaks out and causes damage to vehicle components or make them unusable. Skin contact should also be reliably prevented. For the reasons named above, comparatively large equipment, which is difficult to handle and that can present problems to an inexperienced user, is used when handling brake fluid during filling and bleeding. [0005] The brake fluid to be filled is typically decanted from closed air-tight containers into a plastic bottle, which is then connected to the brake caliper valve via a hose. A collection container for collecting discharged brake fluid is connected via a hose to the filling and bleeding opening of the dispensing system. [0006] By squeezing the plastic bottle, the brake fluid is forced through the hydraulic system until it escapes without bubbles from the top in the equalizing reservoir or from the filling and bleeding opening. Here, the plastic bottle must be squeezed together and restored to its original form several times until no air bubbles emerge from the brake caliper. [0007] Overall, the filling and bleeding of the hydraulic system is complicated in terms of handling, especially for those not skilled in the art, and also in terms of the necessary equipment, wherein sometimes makeshift arrangements are used as aids for holding the containers that are used. In addition, there is an elevated risk that hydraulic fluid will spill during the handling and that in this way damage and/or injury could result. SUMMARY [0008] The object of the present invention is to simplify and make safer the filling and bleeding of the hydraulic system in a brake system of the type named above, so that the brake system can be easily filled and bled dribble-free and without contaminating the surroundings with brake fluid. [0009] To this end, it is proposed that a bleeding and filling tool with a piston/cylinder arrangement is allocated to the brake equipment and that at least the filling and bleeding opening of the dispensing system is constructed for detachable coupling with this bleeding and filling tool. [0010] With such a tool having a piston/cylinder arrangement, an especially good capability for dosing the hydraulic fluid to be filled is provided. This is especially important in consideration of the low filling amount, for example, for hydraulic brake equipment for bicycles. In addition, both pressure and also a relatively high vacuum can be generated, through which, in addition to a flushing filling of the hydraulic system, also a suction filling of the hydraulic system is possible. Thus, the bleeding and filling tool can be connected tightly at the top to the filling and bleeding opening of the dispensing system and then through suctioning with its piston/cylinder arrangement, hydraulic fluid is suctioned from the bottom end of the hydraulic system until bubble-free hydraulic fluid is emitted from the top. [0011] Preferably, the detachable connection between the bleeding and filling tool and the filling and bleeding opening of the dispensing system is formed through a sealing insertion process. [0012] Through the sealing insertion of the bleeding and filing tool, filling and/or bleeding of the hydraulic system can be performed essentially without additional aids. [0013] The filling and bleeding opening of the dispensing system is preferably arranged on the top side of this system and especially in a cover of the equalizing reservoir. [0014] The filling and bleeding opening is thus located on the top side of the dispensing system, which produces a favorable position for the filling and bleeding. [0015] The orientation direction of the filling and bleeding opening is aligned, in particular, essentially vertically or somewhat diagonally, so that the bleeding and filling tool can be inserted from above. [0016] Preferably, the bleeding and filling tool has a connecting sleeve or a similar connecting element for sealing insertion into the filling and bleeding opening(s). [0017] The bleeding and filling tool can be inserted with its connecting sleeve directly into the filling and bleeding opening and is then held in an approximately vertical or somewhat diagonal position. Additional holding aids are not necessary. [0018] In particular, through a conical connection between a connecting sleeve and the filling and bleeding opening, a tight and secure connection, which is pressure-tight and vacuum-tight and which contributes to simple and clean handling during filling and bleeding processes, is provided just through an insertion process. [0019] It is especially preferable when the connecting sleeve of the bleeding and filling tool has a Luer cone or a Luer lock and when the filling and bleeding opening of the equalizing reservoir fits the connecting sleeve. Both the Luer cone for insertion and also the Luer lock for screwing-in form proven, easy to handle, tight, and safe connections. [0020] If a Luer cone or Luer lock is used as a conical connection, in an especially advantageous way, a standard syringe, which is available practically anywhere and which is economical and whose common fill volume of, for example, 10 ml or 20 ml, is sufficient for a complete filling and/or bleeding of a hydraulic system, especially for bicycles, could be used as the bleeding and filling tool without having to be attached and removed several times. [0021] Preferably, the brake mechanism also has a filling and bleeding opening, which is constructed for detachable coupling with the bleeding and filling tool through a preferably sealing insertion process. Here, the filling and bleeding opening of the brake mechanism also fits the connecting sleeve of the bleeding and filling tool formed especially by a syringe. Continue reading... Full patent description for Brake system with hydraulic brake equipment Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Brake system with hydraulic brake equipment patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Brake system with hydraulic brake equipment or other areas of interest. ### Previous Patent Application: Disk brakes Next Patent Application: Wheel brake caliper Industry Class: Brakes ### FreshPatents.com Support Thank you for viewing the Brake system with hydraulic brake equipment patent info. 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